// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/common/memory/raw_vector.h>
#include <melon/preprocessor.h>
#include <numeric>

namespace kumo::pollux {
    namespace {
        raw_vector<int32_t> iotaData;

        bool initializeIota() {
            iotaData.resize(10000);
            iotaData.resize(iotaData.capacity());
            std::iota(iotaData.begin(), iotaData.end(), 0);
            return true;
        }
    } // namespace

    const int32_t *
    iota(int32_t size, raw_vector<int32_t> &storage, int32_t offset) {
        if (iotaData.size() < offset + size) {
            storage.resize(size);
            std::iota(storage.begin(), storage.end(), offset);
            return storage.data();
        }
        return iotaData.data() + offset;
    }

    static bool FB_ANONYMOUS_VARIABLE(g_iotaConstants) = initializeIota();
} // namespace kumo::pollux
